Abstract: A detachable ammunition magazine for high rate-of-fire guns that stores and positively feeds triangularly shaped cartridges to the gun in serial order. The cartridges are stored in a series of concentric cylindrically shaped tiers or arrays, and are advanced in a spiral path and transferred from one array to another to replace the cartridges fed to the gun. All cartridges are continuously maintained in spiral movement during feeding to the gun and are transfered between tiers using a fixed cam structure.

Abstract: A rapid rate of fire, multiple barrel gun employing triangularly shaped cartridges that are fed and ejected transversely to the barrels of the gun. Each barrel has its own separate feed and ejection system, that are driven in common in a synchronized but out-of-phase relationship to successively fire from the different barrels. During each cycle of feed, the cartriges are successively accelerated, then moved at constant speed, then decelerated, and monentarily stopped during firing. The common drive mechanism transfers energy from the feed being decelerated to a different feed being accelerated to more efficiently drive the plural feed and ejection mechanisms at high speed.

Abstract: A system for directional drilling of boreholes into the earth under control of the driller at the surface, employing a rotating earth drill including a projectile firing mechanism, that is timed to nonsymmetrically fire projectiles into the earth at controlled angular positions that are offset from the axis of the drill and drill string in the desired direction of drilling.

Abstract: A miniature hand scannable portable copier for use by students and others in copying documents or excerpts of documents, and comprised of a solid state optical sensor array and a thermal print head array supported within a pocket sized housing in substantially coplanar relationship to each other and to both the original and copy sheets of paper. In one method copies are made using a partially or fully transparent thermal copy sheet by passing scanning light through the copy sheet to be reflected back from the original image to be copied underneath. In an alternative method, the copy sheet and original are arranged in overlapping relationship and the copy is made alongside the original and in the same plane.

Abstract: A method of measuring lithology, and other underground conditions, while drilling bores into the earth employing the repetitive firing of projectiles to fracture rock and penetrate the earth and detecting the high intensity acoustic signals being produced as the drill progressively penetrates.

Abstract: A cementable coupling for plastic pipe, that may be employed whether the parts are wet or dry, including cementable fitting and sleeve members that initially provide a dry seal near the end of the pipe, permitting initial drying of the pipe upstream of the dry seal, and enable later cementing of these members together and to the pipe at a location upstream of the dry seal.

Abstract: An improved device for measuring the tightening angle on a wrench. The directionally fixed member is a liquid body which may include solid particles or a turbine wheel, the relative velocity of which is monitored to determine the relative motion of the liquid with respect to the wrench.

Abstract: An ignitable charge for producing pressurized gas to power industrial tools; that is made of plentiful, common materials at a very low cost, lower in cost than conventional charges by orders of magnitude. The charge is comprised of a hollow plastic jacket of triangular cross section that is open through its center to both opposite ends and contains a nitrocellulose propellant in uncompressed, or expanded form that may be electrically ignited through one end of the jacket by a spark, hot wire, or the like in an open chambertype feed and firing mechanism. The charge produces pressurized gas at the desired burning rate and peak pressures for operating the tool.

Abstract: A miniature receiver for a paging system having a digital display for displaying a received multi-digit number, and a memory for storing the received number to permit its retrieval and display at a later time. The received digital number may be automatically transferred into the memory and automatically retrieved upon command. Plural numbers may also be received successively displayed, and stored for later retrieval, in either an automatic or a manually controlled mode.

Abstract: A raster-scan display system for computer-generated images in which each raster line is quantized into a number (N) of sets of image elements each successive set being displaced in time, with respect to the line start, by 1/N of the duration of one element. The corresponding video signals are summed for each line and the resultant signal is displayed. The technique provides a visual image with graded intensity changes more nearly simulating a television type image, instead of a stepwise changing image. In one form of the invention, a triangular hold technique is used, that is, the display is delayed to permit of a linearly changing intensity charge between consecutive elements of different intensity.

Abstract: An instantaneous, omnidirectional direction finding system for locating an incoming wave over a complete 360.degree. arc in space employing a circular antenna array and a fixed phase shifting network for deriving from said array a differently time phase shifted signal for each different spatial direction. The array observes all spatial directions continuously, as opposed to a sequential angular scanning technique. In a preferred system, the phase shifting network provides a plurality of output modes wherein the incoming wave is defined by different phase displaced signals that are compared and quantized to obtain a digital code representing direction.

Abstract: An ignitable charge for producing pressurized gas to power industrial tools, that is made of plentiful, common materials at a very low cost, lower in cost than conventional charges by orders of magnitude. The charge is comprised of a hollow plastic jacket of triangular cross section that is open through its center to both opposite ends and contains a nitrocellulose propellant in uncompressed, or expanded form that may be ignited through one end of the jacket by a spark, hot wire, or the like in an open chamber type feed and firing mechanism. The charge produces pressurized gas at the desired burning rate and peak pressures for operating the tool.

Abstract: A coaster for containers of hot or cold liquids that more effectively insulates the container from both the outer walls and base of the coaster, and that does so for longer periods of time of continuous use than known devices. Among other features, the coaster impedes the formation of condensate water on its outside walls and base, and provides an improved non-adhering adsorbent layer to receive and contain the container and receive the condensate drained from its walls.

Abstract: A hidden or concealed lock for sliding windows, door panels and the like, employing a concealed hollow tubular locking sleeve that is positioned entirely inside of an aligned opening passing through the interior frame of one of said windows and into the frame of the other window. The locking sleeve is manipulated into and out of locking position by a small rod shaped key member that is coaxially insertable into the locking sleeve from outside the window after passing through the small opening in the window frame. Both the locking and key members and openings are made small and unobstrusive; and are located for concealment in differing locations. These features prevent an unauthorized user from either locating the lock, determining its mode of operation; or unlocking the windows or panels without access to the special key.

Abstract: An elapsed time display and reminder device that is manually adjustable by the user to select a time in the future that may be many days in advance of the present, and to provide a calibrated countdown display of the progressively diminishing time interval until the selected future time is reached. In a preferred device, the user enters the present time and the future time in calendar form as a month and day of the month, and the device automatically converts this future calendar date less the present date, into an elapsed time interval as a number of days.

Abstract: The perfusion rate in animal tissue is measured percutaneously at a specific locus, and at the same time the indicator concentration is percutaneously measured at the same locus so that the perfusion efficiency factor can be determined. Apparatus for carrying out the above method is also disclosed comprising, in combination, a first and a second wall means defining a first and a second surface, each placed in contact with animal tissue to be measured and respectively cooperating with first and second sensor means so that the temperatures of said surfaces can be compared and simultaneously processed with the measurement of the indicator concentration performed by a separate measuring means also in contact with the tissue, so that the perfusion efficiency factor can be determined.